title: [Carbamyl phosphate and citrulline formation by phototrophic bacteria].
abstract: The purple bacteria Ectothiorhodospira shaposhnikovii and Rhodospirillum rubrum are capable of synthesizing citrulline in the presence of ammonium hydrocarbonate, ornithine, ATP and Mg2+ ions. Citrulline biosynthesis by these phototrophic bacteria is presumed to be catalysed by carbamate kinase and ornithine transcarbamoylase. Therefore, certain phototrophic bacteria can assimilate carbon dioxide and ammonia for biosynthesis of amino acids, in particular, citrulline and, apparently, arginine.
mesh_terms: D000641:Ammonia / Q000378:metabolism; D001419:Bacteria / Q000201:enzymology*; D002219:Carbamates / Q000096:biosynthesis*; D002221:Carbamyl Phosphate / Q000096:biosynthesis*; D002245:Carbon Dioxide / Q000378:metabolism; D002384:Catalysis; D002956:Citrulline / Q000096:biosynthesis*; D012242:Rhodobacter sphaeroides / Q000201:enzymology; D012247:Rhodospirillum rubrum / Q000201:enzymology
chemical_list: D002219:Carbamates; D002245:Carbon Dioxide; D002956:Citrulline; D002221:Carbamyl Phosphate; D000641:Ammonia
vernacular_title: Obrazovanie karbamoilfosfata i tsirullina fototrofnymi bakteriiami.